SDS & GHS guides

Practical, plain-language guides to safety data sheet authoring and hazard-communication compliance, written by the team behind Imperium SDS.

• How to Write a GHS-Compliant Safety Data Sheet

  A section-by-section walkthrough of the 16-section GHS SDS format: what belongs in each section, the most common mistakes, and how the pieces fit together.

• GHS Mixture Classification, Explained

  How GHS mixture classification works: concentration cut-offs, additivity formulas, specific concentration limits, and why results must be repeatable.

• OSHA HazCom vs WHMIS vs EU CLP: SDS Requirements by Jurisdiction

  What changes on an SDS between the US, Canada, the EU, and Mexico: supplier identity, exposure limits, classification systems, and language requirements.

• SDS Section 8 Exposure Limits: PELs, RELs, TLVs, and IOELVs

  The occupational exposure limits that belong in Section 8 of an SDS, who publishes each one, and how to choose what to list for each jurisdiction.

• When Must a Safety Data Sheet Be Updated?

  The rules and best practices for SDS revision: what triggers a mandatory update, how fast it must happen, and how to manage revision history.

• SDS vs TDS: What Goes on a Safety Data Sheet vs a Technical Data Sheet

  The two documents every chemical product ships with, what each is for, what belongs on which, and why mixing them up causes compliance problems.

Looking for a specific substance? Browse the common-chemicals index, or see how Imperium SDS works.